Emerson 2468CD Weather Radio User Manual


 
Hydrastep Pressure Parts Fault Repair and Commissioning
24675030 3-1
3
Fault Repair and Commissioning
Contents
Page No.
3.1 BACKGROUND 3-3
3.1.1 SAFETY PRECAUTIONS .......................................................................... 3-3
3.1.2 WATER COLUMN ISOLATION ................................................................. 3-4
3.1.3 ELECTRODE AND ELECTRODE SEAL LEAKS ...................................... 3-4
3.1.3.1 LOW PRESSURE ELECTRODES .......................................................... 3-4
3.1.3.2 HIGH PRESSURE ELECTRODES ......................................................... 3-5
3.1.3.3 TIGHTENING PROCEDURE FOR HIGH PRESSURE ELECTRODE
INSTALLATION ....................................................................................... 3-5
3.1.4 PROCEDURE FOR CHANGING THE LOW PRESSURE ELECTRODES
AND GASKETS ......................................................................................... 3-5
3.1.5 PROCEDURE FOR CHANGING HIGH PRESSURE ELECTRODES ....... 3-6
3.2 WATER COLUMN COMMISSIONING OR RECOMMISSIONING 3-6
3.2.1 VENT AND DRAIN VALVE REPAIRS ....................................................... 3-6
3.2.2 WATER COLUMN TRANSIENT RESPONSE ........................................... 3-7
3.2.3 WATER COLUMN OR PIPEWORK BLOCKAGE...................................... 3-7
3.2.4 WATER COLUMN LIFE ............................................................................ 3-7
Note:
THERE IS NO NEED TO BLOW WATER COLUMN DOWN WHEN COMMISSIONING.
THE SYSTEM CONTINUOUSLY FLUSHES THE WATER COLUMN.